AU2020100567A4

AU2020100567A4 - Foam generator for preparing foam

Info

Publication number: AU2020100567A4
Application number: AU2020100567A
Authority: AU
Inventors: Bangxin Jin; Ze SHAN; Zhilin Xi
Original assignee: Tianjin University of Technology
Current assignee: Tianjin University of Technology
Priority date: 2020-01-06
Filing date: 2020-04-15
Publication date: 2020-05-28
Anticipated expiration: 2028-04-15
Also published as: CN111135503A; CN111135503B

Abstract

The present invention discloses a foam generator for preparing foam, including a pressure tank, a pressure relief valve, an infusion tube and a mixing tube, where the pressure tank is used for accommodating a solution for preparing foam and a high-pressure gas; the pressure tank is provided with the pressure relief valve which is communicated with the mixing tube; the infusion tube penetrates into the pressure tank; one end of the infusion tube is positioned in the solution, and the other end of the infusion tube is communicated with the mixing tube. The present invention utilizes pressure generated by the high-pressure gas to press liquid out and the liquid is mixed with gas to prepare foam. The high-pressure gas is used as power, and miniaturization of the foam generator can be realized. The foam generator can also provide fire extinguishing technical means for kitchen fires, automobile fires, industrial production fires, etc, and has very wide application prospect and social benefits. 34 6 7 6 9 1 13 2 -12 -- - - 15- - - -

Description

FOAM GENERATOR FOR PREPARING FOAM TECHNICAL FIELD

The present invention relates to the technical field of foam generators, and in particular, to a foam generator for preparing foam.

BACKGROUND

At present, small fire extinguishers widely used in the market include dry powder fire extinguishers, water-based fire extinguishers, carbon dioxide fire extinguishers, etc. These extinguishers play an important role in controlling initial fires, but the miniaturization application of a foam technology is still blank. The water-based foam technology has a very broad application prospect and social and economic benefits due to its advantages of wide applicability, rapid fire extinguishing and non-recurrence of fires extinguished.

Water-based foam is widely used in the fire fighting industry. As early as the 1950s, Britain was the first to apply water-based foam to practice. Subsequently, the United States, the former Soviet Union, the former West Germany, Japan and other countries successively carried out research work in this aspect and achieved certain results. The application of water-based foam in production practice started late in China. In the 1980s, Chen Dongsheng of the Shanghai Research Institute of the China Coal Research Institute initially studied the mechanism of foam dedusting, but due to limited conditions, no industrial test was performed. After entering the 21st century, Professor Wang Deming of China University of Mining and Technology added fly ash (three-phase foam) to the water-based foam for the first time for mine fire prevention and control, and then applied the water-based foam to the dust prevention and control of a mine mining working face, and achieved good application results. However, due to the shortcomings of complex structure, too many power sources and low foam conversion rate of the foam generator and the like, the miniaturization of a foam preparation device cannot be realized.

Therefore, in order to realize the popularization and application of water-based foam in production practice, it is necessary to develop a miniaturized foam generating device for preparing foam.

SUMMARY

The present invention provides a foam generator for preparing foam, so as to solve the foregoing problems existing in the prior art, realize miniaturization of a foam preparation device and facilitate popularization and application of water-based foam.

i

2020100567 15 Apr 2020

To achieve the above objective, the present invention provides the following solution.

The present invention provides a foam generator for preparing foam, including a pressure tank, a pressure relief valve, an infusion tube and a mixing tube, where the pressure tank is used for accommodating a solution for preparing foam and a high-pressure gas; the pressure tank is provided with the pressure relief valve which is communicated with the mixing tube; the infusion tube penetrates into the pressure tank; one end of the infusion tube is positioned in the solution, and the other end of the infusion tube is communicated with the mixing tube.

Preferably, a top of the pressure tank is provided with a three-way valve and a pressure gage, a second end of the three-way valve is connected to the pressure relief valve through a threaded connection valve, and a third end of the three-way valve is connected to the mixing tube through a quick connection valve.

Preferably, a pressure regulating valve is disposed between the third end of the three-way valve and the mixing tube.

Preferably, the mixing tube is connected to a spray gun through a quick connection valve.

Preferably, a hose is disposed between the mixing tube and the spray gun, and a valve is disposed on the hose.

Preferably, one end of the infusion tube is provided with a liquid suction port and the liquid suction port can be in contact with a bottom of the pressure tank.

Preferably, the other end of the infusion tube is bent and then nested in the mixing tube, and a gap is reserved between the infusion tube and the mixing tube.

Preferably, the infusion tube is provided with a valve which is positioned between the pressure tank and the mixing tube.

The present invention achieves the following technical effects compared with the prior art.

The present invention utilizes pressure generated by the high-pressure gas to press liquid out and the liquid is mixed with gas to prepare foam. The high-pressure gas is used as power, and miniaturization of the foam generator can be realized. The foam generator can also provide fire extinguishing technical means for kitchen fires, automobile fires, industrial production fires and the like, and has very wide application prospect and social benefits.

BRIEF DESCRIPTION OF THE DRAWINGS

To describe the technical solutions in the embodiments of the present invention or in the

2020100567 15 Apr 2020 prior art more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show merely some embodiments of the present invention, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a foam generator for preparing foam according to the present invention.

1. Pressure tank, 2. three-way valve, 3-pressure gage, 4. threaded connection valve, 5. pressure relief valve, 6. quick connection valve, 7. pressure regulating valve, 8. infusion tube, 9. mixing tube, 10. liquid suction port, 11. hose, 12. valve, 13. spray gun, 14. high-pressure gas, 15. solution.

DETAILED DESCRIPTION

The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are merely some rather than all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

The present invention provides a foam generator for preparing foam, so as to solve the problems existing in the prior art, realize miniaturization of a foam preparation device and facilitate popularization and application of water-based foam.

To make the foregoing objectives, features, and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail with reference to the accompanying drawings and specific implementations.

As shown in FIG. 1, the embodiment discloses a foam generator for preparing foam, including a pressure tank 1, a pressure relief valve 5, an infusion tube 8 and a mixing tube 9, where the pressure tank 1 is used for accommodating a solution 15 for preparing foam and a high-pressure gas 14; the pressure tank 1 is provided with the pressure relief valve 5 which is communicated with the mixing tube 9; the infusion tube 8 penetrates into the pressure tank 1; one end of the infusion tube 8 is positioned in the solution 15, and the other end of the infusion tube 8 is communicated with the mixing tube 9.

2020100567 15 Apr 2020

A top of the pressure tank 1 is provided with a three-way valve 2 and a pressure gage 3. The pressure gage 3 of this embodiment is disposed on the three-way valve 2. A second end of the three-way valve 2 is connected to the pressure relief valve 5 through a threaded connection valve 4, and a third end of the three-way valve 2 is connected to the mixing tube 9 through a quick connection valve 6. A pressure regulating valve 7 is disposed between the third end of the threeway valve 2 and the mixing tube 9 to regulate the pressure of the discharged high-pressure gas 14. The mixing tube 9 is connected to a spray gun 13 through a quick connection valve 6. A hose 11 is disposed between the mixing tube 9 and the spray gun 13, and a valve 12 is disposed on the hose 11.

One end of the infusion tube 8 is provided with a liquid suction port 10 and the liquid suction port 10 can be in contact with a bottom of the pressure tank 1. The other end of the infusion tube 8 is bent and then nested in the mixing tube 9, so that a device is convenient to use. A gap is reserved between the infusion tube 8 and the mixing tube 9, and the gap is for the high-pressure gas 14 to drive the solution 15 for preparing foam to pass through the hose 11 together. The infusion tube 8 is provided with a valve 12 which is positioned between the pressure tank 1 and the mixing tube 9.

In this embodiment, the threaded connection valve 4 is used for a connection that is not often movable, and the quick connection valve 6 is used for connection parts that are frequently disassembled, so that disassembly and assembly are more convenient. The solution 15 for preparing foam and a compressed gas fill the pressure tank 1 in advance, and the pressure tank 1 has a certain air pressure, and a stable product for preparing foam is formed.

A specific use process of the foam generator for preparing foam according to this embodiment includes the following steps of:

switching on the pressure relief valve 5 on the pressure tank 1, where the high-pressure gas 14 passes through the pressure relief valve 5 and the pressure regulating valve 7 and is released in the mixing tube 9, so that the outlet pressure of the high-pressure gas 14 keeps a measured value of the pressure gage 3 at about four atmospheres; then switching on the valve 12 on the infusion tube 8, so that the solution 15 for preparing foam is pressed out of the infusion tube 8 under the action of the high-pressure gas 14 and is mixed with the high-pressure gas 14 in the mixing tube 9 for foaming (foam can be generated when the high-pressure gas 14 and the solution 15 are mixed under turbulent airflow), and then outputting the foam through the hose 11 and the spray gun 13 in sequence. The effect of ejecting foam can be realized by controlling a flow rate of foam liquid through the valve 12 on the infusion tube 8.

2020100567 15 Apr 2020

In this embodiment, the high-pressure gas 14 is used as the only power to realize the miniaturization of the foam generator. It is a foam making technology that uses the pressure generated by the high-pressure gas 14 to press liquid out and mix with the gas, which is conducive to the popularization and application of water-based foam in actual production.

Specific embodiments are applied in this specification to describe the principle and implementations of the present invention. The description of the foregoing embodiments is only used for facilitating understanding of the method and the core idea of the present invention; and meanwhile, for those of ordinary skills in the art, there may be changes in specific implementations and application scope in accordance with the concept of the present invention. In conclusion, the content of this specification shall not be construed as a limitation to the present invention.

Claims

What is claimed is:

1. A foam generator for preparing foam, comprising a pressure tank, a pressure relief valve, an infusion tube and a mixing tube, wherein the pressure tank is used for accommodating a solution for preparing foam and a high-pressure gas; the pressure tank is provided with the pressure relief valve which is communicated with the mixing tube; the infusion tube penetrates into the pressure tank; one end of the infusion tube is positioned in the solution, and the other end of the infusion tube is communicated with the mixing tube.
2. The foam generator for preparing foam according to claim 1, wherein a top of the pressure tank is provided with a three-way valve and a pressure gage, a second end of the three-way valve is connected to the pressure relief valve through a threaded connection valve, and a third end of the three-way valve is connected to the mixing tube through a quick connection valve, preferably, wherein a pressure regulating valve is disposed between the third end of the three-way valve and the mixing tube.
3. The foam generator for preparing foam according to claim 1, wherein the mixing tube is connected to a spray gun through a quick connection valve, preferably, wherein a hose is disposed between the mixing tube and the spray gun, and a valve is disposed on the hose.
4. The foam generator for preparing foam according to claim 1, wherein one end of the infusion tube is provided with a liquid suction port and the liquid suction port can be in contact with a bottom of the pressure tank.
5. The foam generator for preparing foam according to claim 1, wherein the other end of the infusion tube is bent and then nested in the mixing tube, and a gap is reserved between the infusion tube and the mixing tube, preferably, wherein the infusion tube is provided with a valve which is positioned between the pressure tank and the mixing tube.